diff --git a/lib_xua/api/xua_conf_default.h b/lib_xua/api/xua_conf_default.h
index 8876372c..ee3bc85f 100644
--- a/lib_xua/api/xua_conf_default.h
+++ b/lib_xua/api/xua_conf_default.h
@@ -198,7 +198,7 @@
 #endif
 
 /**
- * @brief Number of bits per channel for I2S/TDM. Supported values: 16/24/32-bit.
+ * @brief Number of bits per channel for I2S/TDM. Supported values: 16/32-bit.
  *
  * Default: 32 bits
  */
@@ -206,8 +206,8 @@
 #define XUA_I2S_N_BITS (32)
 #endif
 
-#if (XUA_I2S_N_BITS != 16) && (XUA_I2S_N_BITS != 24) && (XUA_I2S_N_BITS != 32)
-#error Unsupported value for XUA_I2S_N_BITS (only values 16/24/32 supported)
+#if (XUA_I2S_N_BITS != 16) && (XUA_I2S_N_BITS != 32)
+#error Unsupported value for XUA_I2S_N_BITS (only values 16/32 supported)
 #endif
 
 /**
diff --git a/lib_xua/doc/rst/opt_i2s.rst b/lib_xua/doc/rst/opt_i2s.rst
index 7547f419..005030b0 100644
--- a/lib_xua/doc/rst/opt_i2s.rst
+++ b/lib_xua/doc/rst/opt_i2s.rst
@@ -29,7 +29,7 @@ The defines in :ref:`opt_i2s_defines` effect the I2S implementation.
      - Sets if xCORE is I2S master or slave
      - ``0`` (xCORE is master)
    * - ``XUA_I2S_N_BITS``
-     - I2S/TDM word length (16, 24 or 32bit supported)
+     - I2S/TDM word length (16, 32-bit supported)
      - ``32``
 
 The I2S code expects that the ports required for I2S (master clock, LR-clock, bit-clock and data lines) are be defined in the application XN file in the relevant `Tile``.  
diff --git a/lib_xua/doc/rst/overview.rst b/lib_xua/doc/rst/overview.rst
index d014a45d..be8a2d27 100644
--- a/lib_xua/doc/rst/overview.rst
+++ b/lib_xua/doc/rst/overview.rst
@@ -25,7 +25,7 @@ Overview
  |                                 +---------------------------------------------------------------------------------------------+
  |                                 | `USB Midi Device Class 1.0 <http://www.usb.org/developers/devclass_docs/midi10.pdf>`_       |
  +---------------------------------+---------------------------------------------------------------------------------------------+
- |   Audio                         |   I2S/TDM (16/24/32-bit)                                                                    |
+ |   Audio                         |   I2S/TDM (16/32-bit)                                                                    |
  |                                 +---------------------------------------------------------------------------------------------+
  |                                 |   S/PDIF                                                                                    |
  |                                 +---------------------------------------------------------------------------------------------+